Joint structure for superimposed columns.



PATENTED, FEB

R, EBERHARD.

AP,PLIOATION FILED NOV-25,1907.

ATTORNEYS.

. NEN

WITNESSES .UNITED STATES PATENT OFFICE.

CARL BUDOLF EBERHARD, OF PATERSON, NEW JERSEY.

JOINT STRUCTURE FOR SUPERIMPOSED COLUMNS.

s ecification of Letters Patent.

Applieationiled November 25. 1907. Serial No. 403.647.

Patented Feb.- 25,1908.

.. reference being iffad m tha accompanying drawings, and to letters of reference marked j'thereon, which form a part of this specification. This invention relates to the construction I of 'build ings and particularly to the means force the columns a ainst bendin for supporting superimposed columns in proper-relationto each other and to other parts of the building structure.

The principal objects of-the invention are:

' (1') to provide a device serving as the means in hand which, While extremely simple and substantial in construction and not requir-' ing-other accessories for securing parts together than the bolts for attaching adjoining irders or beams to ,it, will reduce materially the laborand time incident to assembling'the elements of a building frame; (2) as I prefer to employ a concrete or other monolithic type of column, to provide for the load being applied entirely on the concrete or body part of the-lower column, thus saving undue stress on the shell in which such body part is usually incased orenveloped; and (3) to reinstrains which may be exerte thereon as t e result of eccentric loadin My invention wifi be found fully illustrated I in the accompanying drawing, wherein, Figure 1 is a view of so much of av building frame as is involved in the present invention, the adjoining portions of the two columns and the device forming the improved joint-structure appearing in vertical section; Fig. 2 is av substantially similar view, illustrating the manner in which the columns may be reinforced against the efiects of eccentric loading; and, Fig. 3 is a horizontal sectional view, taken just below the joint-structure in Fig. 2.

In said drawing, a designates the lower column and b the upper column, each column comprising by preference the concrete or other monolithici'body part c and a. steel shell (1' enveloping the same; e designates alined girders which, as usual, are supported in about the plane of juncture of the two columns. and in the manner hereinafter to be described.

f designates said joint-structure. This is preferably a casting. com rising the upper socket portion g and the lower socket portion h; the former has cast integral with it the lugs & to which, by the bolts 3', the ends of the girders are secured, While the latter ma be exteriorly ornamented, as by the mo ding k, according to any suitable design.

Z is lateral projections on the casting serving as a rest for the ends of the girders, as

' shown, and Z the usual reinforcing webs for said projections.

The socket portions 9 and h have a common horizontal separating wall, '5 which is formed also as an integral part of the casting and is adapted to take the thrust of each column, such wall being formed on each of.

its to and bottom surfaces with a continuous c annel or groove n whose conformation is substantially similar to that of the steel shell of the corresponding column, excepting slightly wider than the shell is thick. The lower socketortion is formed with the annular interna shoulders 0 and p, respectively disposed at or near the mouth ortion of said socket portion and adjoining tilde wall i; similarly, the socket portion g has the internal annular shoulders q and r respectively disposed at or near the mouth. thereof and adjoining the wall '11. The shoulders o and 11 are of such diameter that the column a may enter the socket portion h and fairly snugly fit therein, while the shoulders q and T have a similar diameter with respect to the column b. By shouldering the sockets internally in this manner the formation of protuberances in casting are less likely to occur on the inside of the sockets to interfere with the ready admission of the columns and revent a perfectly perpendicular dispositlon of the columns in the joint-struo ture.

The annular grooving of the wall '5 in the top and under sides thereof in the manner described above has for its effect to produce on the wall the tables 8 which, when thecol umns are in position, bear-only against the body parts thereof, thus subjecting them alone to the compression action of the load. The upper socket ortion is preferably conical or ta ering in orm, as shown in the 80 i 'that such groove or channel is preferably r stance, the joint-structure f).

provide the columns (orat any rate, the

erally against any leverage which might chance-to be exerted thereon by the upper column. V v

In the construction shown in Figs. 2 and '3 I have had in niindthat eccentric loading is known to exert a tendency to bend the columns which they adapted and fests itself at the column andthe mouth of the member into which it is socketed (in the present in- 1 therefore are of course not structurally the moment of which maniower one) with a reinforcing metal sleeve to which is interposed. between the body part c and sleeve d of the column. If any bending strain occurs as the result of eccentric loading or otherwise it willbe absorbed by the sleeve 11.; this will allow the shell (Z to be made with the minimum of thickness.

In some types of jointstructures, the cap portion for the lower column is applied when the column. is inverted, thus permitting. the shell to be filled with the concrete; the result is that the concrete mass may set in such manner as to leave a spacebetween the head of the cap and the upper end of the concrete,so that when the column. is in position the load will be borne by the shell. My construction not only allows the columns to be made independently of the joint-structure but leaves the ends of the columns exposeduntil the joint-structure is applied so that proper precautions may be taken against the concrete setting with its ends in planes lower than those of the ends of the shell.

Having thus fully described my invention,

What I claim as new and desire to secure by Letters Patent is:

1. In a building construction, the combination, with superimposed columns, of an integral joint-structure therefor having vertically alined sockets respectively receiving the lower end of the upper columnand the upper end of the lower column, said sockets each having internal continuous spaced shoulders bearing against the corresponding column laterally scribed. I

2. In a building construction, the combination, with superimposed columns, of an integral joint-structure therefor having vertically alined sockets respectively receiving thereof, substantially as de- (particularly the lower one) to' some point of contact between the lower end of the upper column and the upper end of the lower column, the upper socket being exteriorly conical, substantially as described. i 1 3. In a building construction, the combinationwith a column comprising a monolithic body part and ametallic shell incasing said body part, of-a socketedstructure' receiving in its socket one end of said column, said structure having a projecting table bearing against the end of the body part of said column and standing free or clear of the shell thereof, substantially as described.

4. In a building construction, the combination,.with a column comprising a mono lithic body part ahd a metallic shell incasing said body part, of a joint-structure having a socket receiving the end of said-column, the wall of said socket opposed to the end of said column having an annular groove substantially coinciding with the end of the shell of said column, substantially as described.

5. In a building construction, the combination, with a column comprising a monolithic body part and a metallic shell incasing saidbody'part, of a joint-structure having a socket receiving the end of said column, the wall of said socket opposed to the end of said column having aprojecting table bearing against the body part of said column and of less diameter than the shell, substantially as described. i 6. In a building construction, the'combination, with a column comprisin a monolithic body part and a metallic sheIl incasing said body part, of a joint-structure having a socket receiving the end of said column, and a reinforcing sleeve for said column projecting into said socket, substantially as described. i

7. In a building construction, the combination, with a column, comprising a monolithic body part and a metallic shell incasing said body part, of a 'socketed structure receiving in its socket one and a reinforcing sleeve for said column projecting into said socket, substantially as described. W

In testimony, that I claim the foregoing, I have hereunto set my hand this 22 day of November 1907.

C. RUDOLF EBERHARD. Witnesses: L

JoHN W. STEWARD,

WM. D. BELL.

end of said column, 

